Machine for lasting shoes and boots



,UNTTED sTATEs PATENT onirica.

MACHINE FOR LASTING SHOES AND BOOTS.

Specification of Letters Patent No. 4,587, dated June 20, 1846.

T all whom t may concern: movable thereon for the purpose of length- Beit known that I, SILAs HART, of New ening and shortening the screw.

Haven, in the county of Oswego and State L is a screw for holding thetube at any of New York, have invented a new and usedesired position onthe shaft. 55 ful Improvement in Machines for Lasting The slide is apiece of metal containing Boots and Shoes, which is described as folaround opening in the center thereof correlows, reference being had tothe annexed sponding with the cylindrical portion of the drawings of thesame, making part of this male screw made to turn therein. It also Yspeciication. contains two openings to admit the arms 60 Figure l is aplan of the machine. Fig. 2 which are `inserted therein, each opening isa plan of the slide detached from the containing an antitriction roller.The slide arms and screw. Fig. 3 is a view of one oi." is connected tothe cylindrical part of the the arms and jaws. Fig. 4, section of thescrew-shaft by collars and pins and remains extension tube. stationaryduring the operat-ionof drawing 65 The nature of this invention andimprovethe arms through the openings therein.

ment consists in Contracting and expanding Operation: Turn the screw tothe left the arms containing thejaws for gripping the until the nut towhich the arms are jointed edges of the upper of the boot or shoe, by isnear the slide, which at the same time ex means of a slide that embracesor encircles pand the arms; then bring the leather over 70 the arms,said arms being` moved toward or the last and insert the edges in thejaws and 'from the last simultaneously with the opsecure them by thescrews ot the jaws. Turn eration of turning the male screw in a thescrew to the right. This operation will female screw in the center ofthe nutl to cause the nutrand arms to recede from the which they areconnected by which the angle last and bring the arms against the rollers75 of the arms with the screw is diminished in the slide causing thearms to close toward in lasting the upper and increased in .unthe screw;at the same time drawing the lasting it by reversing the operation ofthe leather around the last, the power increasing screw, thus removingthe objections existing as the angle decreases of the arms with the inthe use Aof the machine where the arms screw until they are nearlyparallel with 80 are expanded and contracted by a separate the screw. Tounlast the upper it isafonly screw arranged at right angles to the mainnecessary t0 reverse the motion of the screw screw, and possessing theadvantage of which also reverses the mot-ion of the nut drawing theedges of the leather inward toand arms. ward the shank and outwardtoward the The upper can be lasted more etfectually 85 slidesimultaneously at the single operation and more expeditiously with thismachine of turning the screw against the last. than by any other knownmeans, one opera- A is the main screw turned against the tion being allthat is necessary after the last by means of a crank handle or otherleather'is secured by the jaws and the screw means. B the nut to whichthe arms are is adjusted. 90,

40 attached. C C the arms. D D the jaws. What I claim as my inventionand desire E E the screws for closing the jaws. F the to secure byLetters Patent isslide for contracting and expanding the l. Combiningthe screw and slide with the arms. G a round opening in the center ofjaws in the manner and :tor the purpose dethe slide through which theround part of scribed. 95

the screw-shaft passes. H H two antifric- 2. I also claim the movablesection K in tion rollers for reducing friction in the opcombinationwith the screw as described. eration 0f the slide.

I is thelast and J the upper or leather to SILAS HART be lasted.Witnesses:

K is a section of the screw-shaft made WM. P. ELLIOT,

hollow and slipped over the shaft and made ALBERT JOHNSON.

